DELL INC

CUSIP: 24702R101 Class: CS

Twin Tree Management, LP's Holding History (CIK: 0001535588)

Note: Option positions (PUT/CALL) are excluded.

Q1 2013
Shares 15,473 Value ($000) $222 Avg Close — Range —
Q4 2012
Shares 52,569 Value ($000) $533 Avg Close — Range —